This is the mail archive of the
gcc@gcc.gnu.org
mailing list for the GCC project.
Re: gcc-current: badly worded warning?
- From: Andreas Schwab <schwab at suse dot de>
- To: Lothar Werzinger <lothar at tradescape dot biz>
- Cc: gcc at gcc dot gnu dot org
- Date: Wed, 30 May 2007 19:04:30 +0200
- Subject: Re: gcc-current: badly worded warning?
- References: <4652F1DE.2050407@eyal.emu.id.au> <f3k9l4$gkr$1@sea.gmane.org>
Lothar Werzinger <lothar@tradescape.biz> writes:
> Eyal Lebedinsky wrote:
>
>> I see two kinds of warnings:
>> warning: logical '||' with non-zero constant will always evaluate as true
>> warning: logical '&&' with non-zero constant will always evaluate as true
>>
>> The first statement is true, the second false. It can say (if the case is
>> such) warning: logical '&&' with zero constant will always evaluate as
>> false and even warn of
>> warning: logical '&&' with non-zero constant will have no effect
>
> That depends, if the non-zero constant is the LHS of the && operator the
> warning is IMHO correct.
1 && 0 is still 0.
Andreas.
--
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
PGP key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."